Johnson, R.C. 2008. Genebanks Pay Big Dividends to Agriculture, the Environment, and Human Welfare. Public Library of Science for Pathogens. (See URL).
Clement, S.L., Hellier, B.C., Elberson, L.R., Bradley, V.L., Johnson, R.C. 2007. Insect Pollination in the Regeneration of Germplasm at the Western Regional Plant Introduction Station. Proceedings 9th International Pollination Symposium on Plant-Pollinator Relationships, Diversity in Action. Iowa State University, Ames, Iowa. p. 62-63.
Kisha, T.J., Johnson, R.C., Skinner, D.Z., Greene, S.L. 2006. Using prevosti's distance coefficient for direct statistical analysis of population differences [abstract]. HortScience. 44(4):967-698.
Adair, R., Johnson, R.C., Hellier, B.C., Kaiser, W. 2006. Collecting taper tip onion (allium acuminatum hook.) in the great basin using traditional and gis methods. Native Plant Journal. 7:141-148.
Johnson, R.C., Dajue, L., Bradley, V.L. 2006. Autumn growth and its relationship to winter survival in diverse safflower germplasm. Canadian Journal of Plant Science. 86:701-732.
Johnson, R.C. 2005. Confining safflower pollen during regeneration of germplasm seed stocks. In: Workshop on the confinement of genetically engineered crops during field testing, September 13-15, 2004, USDA-APHIS Headquaters.
Johnson, R.C., Dajue, L., Foiles, C.L., Bradley, V.L. 2005. Variation In Winter Hardiness Among Safflower Accessions. In: Proceedings of the 6th International Safflower Conference, June 6-10, 2005, Istanbul, Turkey. p. 113-118.
Johnson, R.C., Kisha, T.J., Foiles, C.L., Bradley, V.L. 2006. Characterizing Safflower Germplasm with AFLP Molecular Markers. In Proceedings of the 6th International Safflower Conference, June 6-10, 2005, Istanbul, Turkey. p. 3-8.
Wieners, R.R., Fei, S., Johnson, R.C. 2006. Characterization of a usda kentucky bluegrass (poa pratensis l.) core collection for reproductive mode and dna content by flow cytometry. Genetic Resources and Crop Evolution. doi:10.1007/s10722-005-7766-0.
Johnson, R.C. 2005. Confining safflower pollen during regeneration of germplasm seed stocks [abstract]. USDA APHIS Headquarters Workshop on the Confinement of Genetically Engineered Crops during Field Testing September 13-15, 2004 Agenda and Abstracts, Insect Pollinated Crops.
Poole, G.J., Johnson, W.J., Johnson, R.C. 2005. Regional climatic characterization of pacific northwest, usa, green-type poa annua. International Turfgrass Society Reseach Journal. 10:565-571
Johnson, R.C., Bradley, V.L., Evans, M.A. 2006. Effect of seed sampling method during regeneration on genetic population structure and growth of model ryegrass populations. Plant Genetic Resources Newsletter. 144:1-7.
Johnson, R.C., Bradley, V.L., Evans, M.A. 2004. Inflorescence sampling improves effective population size of grasses. Crop Science. v. 44. p. 1450-1455.
BERTOLI, F.B., JOHNSON, R.C., LUCARONI, B., ROMANI, M., RUSSI, L., PIANO, E., FALCINELLI, M. AGRONOMIC AND MOLECULAR EVALUATION OF KENTUCKY BLUEGRASS GERMPLASM COLLECTED IN ITALY. . 2003.
WIENERS, R.R., FEI, S., JOHNSON, R.C. DETERMINATION OF REPRODUCTIVE MODE AND GENOME SIZE OF A USDA CORE COLLECTION OF KENTUCKY BLUEGRASS (POA PRATENSIS L.) BY CELL FLOW CYTOMETRY. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2003. p. 123246
BERTOLI, F.B., JOHNSON, R.C., KISHA, T.J., JOHNSTON, W.J. MOLECULAR VARIATION AMONG AND WITHIN DIVERSE KENTUCKY BLUEGRASS GERMPLASM. Molecular Breeding of Forage and Turf Conference. 2003. p. 141
Bradley, V.L., Kisha, T.J., Johnson, R.C. 2002. The identification of duplicate accessions within a grass germplasm collection using rapd analysis [abstract]. Crop Science Society of America. p. 131923.
Greene, S.L., Kisha, T.J., Johnson, R.C. 2002. Incidence of introgression between cultivated alfalfa and wild relatives in northwestern Kazakhstan [abstract]. Crop Science Society of America. p. 173749.
Johnson, R.C., Bradely, V.L., Evans, M.A. Seed sampling techniques and divserity maintenance in outcrossing grass species. Crop Science Society of America. 2002. Abstract p. 182030.
Johnson, R.C., Bradley, V.L., Evans, M.A. Reductions in effective populations size during grass regeneration and improvements with sampling. Crop Science. 2002. v. 42. p. 286-290.
Johnson, R.C., Johnston, W.J., Golob, C.T., Soreng, R.J. Evaluation and Characterization of Germplasm: An example using Poa pratensis. Proceeding Second International Sustainable Agriculture Conference for Food, Energy, and Industry. Beijing, China. 2002. p. 1051-1057.
Johnson, R.C., Johnston, W.J., Golob, C.T. Evaluating genetic resources for sustainable production of Poa pratensis. Proceeding Second International Sustainable Agriculture Conference for Food, Energy, and Industry. Beijing, China. 2002. p. 1058-1064.
Johnston, W.J., Johnson, R.C., Golob, C.T., Sitton, J.W. Seed production of diverse Kentucky bluegrass germplasm with various residue management systems. Crop Science Society of America. 2002. Abstract p. 145953.
Kisha, T.J., Johnson, R.C., Skinner, D.Z., Greene, S.L. Variances of genetic distance measurements among alfalfa accessions compared from several molecular marker types. Crop Science Society of America. 2002. Abstract p. 175620.
Johnson, R.C., P.B. Ghorpade, and V.L. Bradley. 2001. Evaluation of the USDA core safflower collection for seven quantitative traits. Proceedings of the Vth International Safflower Conference, Williston, North Dakota, Sidney, Montana, USA. 2001. p. 149-152.
Bradley, V.L., Johnson, R.C. Managing the U.S. safflower collection. In Proceedings of the Vth International Safflower Conference, Williston, North Dakota, Sidney, Montana, USA. 2001. p. 143-147
Bradley, V.L., Johnson, R.C. An assessment of grass regeneration nurseries at the Western Regional Plant Introduction Station, 1994-1997. In Proceedings of the XIX International Grasslands Congress, Sao Pedro, Sao Paulo, Brasil. 2001. p. 883-884.
Johnson, R.C., Bradley, V.L., Evans, M.A. Improving efffective population size during grass seed regeneration. Crop Science Society of America. 2001. Abstract p. 144248.
Kisha, T.J., R.C. Johnson, D.Z. Skinner, and S.L. Greene. Comparison of molecular markers types for characterization of alfalfa accessions. Crop Science Society of America. 2001. Abstract p. 200136
Poole, G.J., Johnston, W.J., Johnson, R.C. Poa annua diversity on golf course greens in the Pacific Northwest, USA. International Turfgrass Science Journal. 2001. v.9.p.192-197.
Poole, G.J., Johnston, W.J., Johnson, R.C. Diversity of greens-type annual bluegrass in the Pacific Northwest. Crop Science Society of America. 2001. Abstract p. 151948.
Prosperi, J-M., Auricht, G.C., Genier, G., Johnson, R.C. Medics (Medicago L.) In N. Maxted and S. Bennett (ed.) Plant Genetic Resources of Legumes in the Mediterranean. Kluwer, Dordrecht, the Netherlands. 2001. p. 99-114.
Prosperi, J-M., Auricht, G.C., Genier, G., Johnson, R.C. Medics(Medicago L.) In N. Maxted and S. Benett (ed.) Plant Genetic Resources of Legumes in the Mediterranean. Kluwer, Dordrecht, the Netherlands. 2001. p. 99-114.